#ifndef XRPL_PROTOCOL_TOKENS_H_INCLUDED
#define XRPL_PROTOCOL_TOKENS_H_INCLUDED

#include <xrpl/basics/Expected.h>
#include <xrpl/basics/contract.h>
#include <xrpl/protocol/detail/token_errors.h>

#include <cstdint>
#include <optional>
#include <span>
#include <string>
#include <string_view>

namespace ripple {

template <class T>
using B58Result = Expected<T, std::error_code>;

enum class TokenType : std::uint8_t {
    None = 1,  // unused
    NodePublic = 28,
    NodePrivate = 32,
    AccountID = 0,
    AccountPublic = 35,
    AccountSecret = 34,
    FamilyGenerator = 41,  // unused
    FamilySeed = 33
};

template <class T>
[[nodiscard]] std::optional<T>
parseBase58(std::string const& s);

template <class T>
[[nodiscard]] std::optional<T>
parseBase58(TokenType type, std::string const& s);

/** Encode data in Base58Check format using XRPL alphabet

    For details on the format see
    https://xrpl.org/base58-encodings.html#base58-encodings

    @param type The type of token to encode.
    @param token Pointer to the data to encode.
    @param size The size of the data to encode.

    @return the encoded token.
*/
[[nodiscard]] std::string
encodeBase58Token(TokenType type, void const* token, std::size_t size);

[[nodiscard]] std::string
decodeBase58Token(std::string const& s, TokenType type);

namespace b58_ref {
// The reference version does not use gcc extensions (int128 in particular)
[[nodiscard]] std::string
encodeBase58Token(TokenType type, void const* token, std::size_t size);

[[nodiscard]] std::string
decodeBase58Token(std::string const& s, TokenType type);

namespace detail {
// Expose detail functions for unit tests only
std::string
encodeBase58(
    void const* message,
    std::size_t size,
    void* temp,
    std::size_t temp_size);

std::string
decodeBase58(std::string const& s);
}  // namespace detail
}  // namespace b58_ref

#ifndef _MSC_VER
namespace b58_fast {
// Use the fast version (10-15x faster) is using gcc extensions (int128 in
// particular)
[[nodiscard]] B58Result<std::span<std::uint8_t>>
encodeBase58Token(
    TokenType token_type,
    std::span<std::uint8_t const> input,
    std::span<std::uint8_t> out);

[[nodiscard]] B58Result<std::span<std::uint8_t>>
decodeBase58Token(
    TokenType type,
    std::string_view s,
    std::span<std::uint8_t> outBuf);

// This interface matches the old interface, but requires additional allocation
[[nodiscard]] std::string
encodeBase58Token(TokenType type, void const* token, std::size_t size);

// This interface matches the old interface, but requires additional allocation
[[nodiscard]] std::string
decodeBase58Token(std::string const& s, TokenType type);

namespace detail {
// Expose detail functions for unit tests only
B58Result<std::span<std::uint8_t>>
b256_to_b58_be(
    std::span<std::uint8_t const> input,
    std::span<std::uint8_t> out);

B58Result<std::span<std::uint8_t>>
b58_to_b256_be(std::string_view input, std::span<std::uint8_t> out);
}  // namespace detail

}  // namespace b58_fast
#endif  // _MSC_VER
}  // namespace ripple

#endif
